Table 1.
Size and surface charge for different carboxyl-coated iron-oxide nanoparticles when suspended in either water or RPMI culture media.
| Particle source | Core diameter (nm) | Zeta potential (mv) | Hydrodynamic diameter4 (nm)
|
|
|---|---|---|---|---|
| Water5 | Culture media | |||
| In-house | ~121 | −34.5 ± 2.92,a,c | 154.7 ± 57.92,b | 457 ± 1132,b |
| Ocean | ~203 | −51.953 | 34.8 ± 18.42,b | 993 ± 2722,b |
| NanoTech | 31.23 | |||
1
Measured by SEM (Zeiss, Merlin SEM).
2
Determined by dynamic light scattering (aZetaPlus analyzer,bHome built, cIn water).
3
Provided by manufacturer.
4
Measured at 10 ug/ml.
5
De-ionized (MilliQ, resistance > 18 MΩ cm).